Investigation of decay modes of superheavy nuclei

2021 ◽  
Vol 32 (11) ◽  
Author(s):  
H. C. Manjunatha ◽  
N. Sowmya ◽  
P. S. Damodara Gupta ◽  
K. N. Sridhar ◽  
A. M. Nagaraja ◽  
...  
2020 ◽  
Vol 29 (10) ◽  
pp. 2050087
Author(s):  
N. Sowmya ◽  
H. C. Manjunatha ◽  
P. S. Damodara Gupta

In this work, we have made an attempt to study the cluster-decay half-lives and alpha-decay half-lives of the superheavy nuclei [Formula: see text]Og by considering the temperature-dependent (TD) and also temperature-independent (TID) proximity potential model. The evaluated half-lives were compared with that of the experiments. To predict the decay modes, we have compared the cluster-decay half-lives and alpha-decay half-lives with that of spontaneous fission half-lives. This work also predicts the decay chains of the superheavy nuclei [Formula: see text]Og and finds an importance in the synthesis of further isotopes of superheavy element Oganesson.


2017 ◽  
Vol 41 (7) ◽  
pp. 074106 ◽  
Author(s):  
Jun-Hong Liu ◽  
Shu-Qing Guo ◽  
Xiao-Jun Bao ◽  
Hong-Fei Zhang

2004 ◽  
Vol 30 (10) ◽  
pp. 1487-1494 ◽  
Author(s):  
S B Duarte ◽  
O A P Tavares ◽  
M Gonçalves ◽  
O Rodríguez ◽  
F Guzmán ◽  
...  

Author(s):  
H. C. Manjunatha ◽  
S. Alfred Cecil Raj ◽  
A. M. Nagaraja ◽  
N. Sowmya

Cluster radioactivity is an intermediate between alpha decay and spontaneous fission. It is also an exotic decay obtained in superheavy nuclei. When a cluster decay is detected in superheavy nuclei, the daughter nuclei is having near or equal to doubly magic nuclei. We have investigated cluster decay of isotopes of He, Li, Be, Ne, N, Mg, Si, P, S, Cl, Ar and Ca in the superhaevy nuclei region 299-306122. We have also compared the logarithmic half-lives of cluster decay with that of other models such as Univ [1], NRDX [2], UDL [3] and Horoi [4]. From this study it is concluded that  cluster decay of 4He, 22Ne, 26Mg, 28Si 30Si, 34S, 40Ca and 46Ca are having shorter logarithmic half-lives compared to exotic cluster decay modes.


2018 ◽  
Vol 27 (09) ◽  
pp. 1850074 ◽  
Author(s):  
G. Saxena ◽  
U. K. Singh ◽  
M. Kumawat ◽  
M. Kaushik ◽  
S. K. Jain ◽  
...  

A fully systematic study of even and odd isotopes [Formula: see text] of [Formula: see text] superheavy nuclei is presented in theoretical frameworks of Relativistic mean-field plus state dependent BCS approach and macroscopic–microscopic approach with triaxially deformed Nilsson-Strutinsky prescription. The ground state properties namely shell correction, binding energy, two- and one-proton and neutron separation energy, shape, deformation, density profile and the radius are estimated that show strong evidences for magicity in [Formula: see text], 228. Central depletion in the charge density due to large repulsive Coulomb field indicating bubble like structure is reported. A comprehensive analysis for the possible decay modes specifically [Formula: see text]-decay and spontaneous fission (SF) is presented and the probable [Formula: see text]-decay chains are evaluated. Results are compared with Finite Range Droplet Model (FRDM) calculations and the available experimental data which show excellent agreement.


2019 ◽  
Vol 28 (01n02) ◽  
pp. 1950008 ◽  
Author(s):  
G. Saxena ◽  
M. Kumawat ◽  
S. Somorendro Singh ◽  
Mamta Aggarwal

Structural properties and the decay modes of the superheavy elements [Formula: see text] and 118 are studied in a microscopic framework. We evaluate the binding energy, one- and two- proton and neutron separation energy, shell correction and density profile of even and odd isotopes of [Formula: see text] [Formula: see text] which show a reasonable match with FRDM results and the available experimental data. Equilibrium shape and deformation of the superheavy region are predicted. We investigate the possible decay modes of this region specifically [Formula: see text]-decay, spontaneous fission (SF) and the [Formula: see text]-decay and evaluate the probable [Formula: see text]-decay chains. The phenomena of bubble like structure in the charge density is predicted in [Formula: see text], [Formula: see text] and [Formula: see text] with significant depletion fraction around 20–24% which increases with increasing Coulomb energy and diminishes with increasing isospin ([Formula: see text]) values exhibiting the fact that the coulomb forces are the main driving force in the central depletion in superheavy systems.


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